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Light energy transduction by the purple membrane of halophilic bacteria; Proceedings of the Symposium, San Francisco, Calif., June 6, 1976Several aspects of bacteriorhodopsin, the retinal protein component of the purple membranes of Halobacterium halobium, are discussed. Structural studies are presented. Photochemical properties of the protein complex and of its chromophore are described. Proton translocation of bacteriorhodopsin is compared to that of a protein from a thermophilic bacterium. Ionophore activity of bacteriorhodopsin is considered with attention to conformational changes, light dependency, and electrical potential. Amino acid transport is also examined and the light-energy budget is investigated. Bacteriorhodopsin is of interest because of its similarity to rhodopsin, which plays a major role in mammalian vision, and also because its attainability and distinctive characteristics will facilitate studies of certain bacterial physiological functions, such as ion transport and membrane organization.
Document ID
19770056051
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Date Acquired
August 9, 2013
Publication Date
May 1, 1977
Subject Category
Life Sciences (General)
Meeting Information
Meeting: Symposium on Light energy transduction by the purple membrane of halophilic bacteria
Location: San Francisco, CA
Start Date: June 6, 1976
Sponsors: NASA
Accession Number
77A38903
Distribution Limits
Public
Copyright
Other

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